Windows HD Audio Device Driver Keeps Deleting Realtek and Disabling Sound

I have a HP 655 Notebook PC with the Windows 7 64 bit OS. Until July 23 2014 everything was working fine. Them some automatic windows update installed the windows hd audio driver and disabled the realtek driver.
I tried everything. I went to device manager, unistalled the windows driver, reinstalled realtek, to no avail. Every single time windows starts it automatically installs this driver.
I disabled the update system. I changed the settings to never install driver software in device installation settings, no avail.
I tried unistalling the update, but it can't be removed.
I did system recovery to the point prior to the update and still the damned device keeps reinstalling itself, only then when I restart the computer suddenly realtek appears. But I have to restart it every single time.
Mind you, I don't care which driver i have as long as there is sound on my laptop! But the only way you get sound on a HP laptop is with a Realtek driver it seems. The Windows HD Audio driver is not working and yet there seems to be no way for me to stop windows from installing it on every boot up.
I also tried installing realtek with the windows driver still installed, but it can't be done, error 0001 appears during the installation. I have to remove the windows driver first the install realtek. But when I restart the computer, the windows driver automatically re-installs itself!!
SOMEONE PLEASE HELP ME
PLEASE

Hi MileKokot,
Your HP 655 is a commercial product and to get your issue more exposure I would suggest posting in the commercial forums. Here is a link to the Commercial Notebook forum.
Thank you,
Please click “Accept as Solution ” if you feel my post solved your issue.
Click the “Kudos Thumbs Up" on the right to say “Thanks” for helping!
Thank you,
BHK6
I work on behalf of HP

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Satellite L50-A00V Notebook missing compatible High Def Audio Device Driver

Hi
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Features
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The notebook seems to be released for Australian market.
I did not find the Win 8.1 drivers on the Toshiba Australian driver page but only Windows 8 drivers.
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Try this driver which was released on Toshiba EU driver page for the similar notebook models: [Realtek Semiconductor Corporation v 6.0.1.7023 Windows 8.1 - 64 Bit|http://www.toshiba.eu/innovation/download_driver_details.jsp?service=EU&selCategory =2&selFamily=2&selSeries=178&selProduct=7948&selSh ortMod=null&language=13&selOS=46&selType=all&yearu pload=&monthupload=&dayupload=&useDate=null&mode=a llMachines&search=&action=search&macId=&country=al l&selectedLanguage=13&type=all&page=2&ID=88586&OSI D=46&driverLanguage=42]
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Please click the "Kudos, Thumbs Up" at the bottom of this post if you want to say "Thanks" for helping!
Please click "Accept as Solution" if you feel my post solved your issue, it will help others find the solution.
The Great Deku Tree
I work on behalf of HP.

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**Click the KUDOS thumb up on the left to say 'Thanks'**
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The problem has to do with dma allocated memory and the little-endian format.
When I copy blocks bigger than 256 bytes to the dma memory, using a uiomove() or bcopy(), the data after the first 32 bytes is swapped around over 8 bytes.
The bcopy from a driver (stack) buffer into the dma virtual memory has the same affect.
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When I set the byte order to big-endian inside the ddi_device_acc_attr the data seems to be alright, also with bigger transfer sizes.
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Data example,
test data: 0x00,0x01,0x02,?.
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000: 07 06 05 04 03 02 01 00 0F 0E 0D 0C 0B 0A 09 08
016: 17 16 15 14 13 12 11 10 1F 1E 1D 1C 1B 1A 19 18
032: 27 26 25 24 23 22 21 20 2F 2E 2D 2C 2B 2A 29 28
048: 37 36 35 34 33 32 31 30 3F 3E 3D 3C 3B 3A 39 38
064: 47 46 45 44 43 42 41 40 4F 4E 4D 4C 4B 4A 49 48
080: 57 56 55 54 53 52 51 50 5F 5E 5D 5C 5B 5A 59 58
096: 67 66 65 64 63 62 61 60 6F 6E 6D 6C 6B 6A 69 68
112: 77 76 75 74 73 72 71 70 7F 7E 7D 7C 7B 7A 79 78
512 or 1024 bytes blocks:
000: 07 06 05 04 03 02 01 00 0F 0E 0D 0C 0B 0A 09 08
016: 17 16 15 14 13 12 11 10 1F 1E 1D 1C 1B 1A 19 18
032: 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F <----- ?
048: 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F <----- ?
064: 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F <----- ?
080: 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F <----- ?
096: 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F <----- ?
112: 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F <----- ?
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static ddi_dma_attr_t dmaattr= {
DMA_ATTR_V0, /* version */
0, /* starting address for DVMA */
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0x1, /* address restrictive alignment, 1 = byte alignment */
0x7, /* burst sizes */
1, /* min number of byes */
0x00ffffff, /* max number of bytes device can transmit/receive */
0xffffffff, /* upper bound of the DMA engine's address */
1,
512,
0, /* DDI_DMA_FORCE_PHYSICAL doesn't work */
ddi_dma_alloc_handle()
if((ret=ddi_dma_alloc_handle(xsp->dip,
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DDI_DMA_SLEEP,
NULL,
dmahandle_out)) != DDI_SUCCESS)
cmn_err(CE_CONT, "ucr_dma_alloc_memory, "
"ERROR ddi_dma_alloc_handle status = %d\n",
ret);
return(ret);
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(uint_t) size,
dma_acc_attr,
DDI_DMA_CONSISTENT,
DDI_DMA_SLEEP,
NULL,
(caddr_t *)&raw_kern_addr,
&real_len,
dma_acc_handle_out)) != DDI_SUCCESS)
cmn_err(CE_CONT, "ucr_ucr_dma_alloc_memory, "
"ERROR ddi_dma_mem_alloc status = %d\n",
ret);
ddi_dma_free_handle(dmahandle_out);
return(ret);
This will also init the PCI - IOMMU for
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if((ret=ddi_dma_addr_bind_handle(*dmahandle_out,
NULL,
(caddr_t)raw_kern_addr,
real_len,
DDI_DMA_RDWR | DDI_DMA_CONSISTENT,
DDI_DMA_SLEEP,
NULL,
&dma_cookie,
&count)) != DDI_SUCCESS)
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ret);
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ddi_dma_free_handle(dmahandle_out);
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if((ret=ddi_dma_sync(*dmahandle_out,
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DDI_DMA_SYNC_FORDEV)) != DDI_SUCCESS)
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ddi_dma_free_handle(dmahandle_out);
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I am having the similar problem identified in this thread.
OS: Sun Solaris 10 01/06
Hardware: Sun Blade 2500
PCI Memory card.
Problem: When driver moves more then 40 bytes via PIO from a PCI device memory card, the long words are swapped starting at 40 byte transfer size and greater.
device memory description:
static ddi_device_acc_attr_t sdram_access_attr =
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PCI Device memory is loaded with incrementing address (8bit), 0,1,2... This is confirmed using a PCI Bus Analyzer.
A read of 36 bytes or less returns:
03 02 01 00 07 06 05 04 ...
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If I peek 1 byte at a time using ddi_get8(ucb->ucb_sdram_accHndl, ...) I get
00 01 02 03 04 05 06 07
Why are the long words swapped starting at 40 byte transfer size and greater?

Itunes is not showing my ipad as a device anymore, i deleted itunes and reloaded, it showed up for awhile, said it was restarting my ipad and now is not showing up again, any ideas??

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